Helmet mandible



FIG. 1 is a perspective view of a helmet mandible showing our new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view thereof, attached to a helmet assembly shown in broken lines.

The broken lines shown in the drawings represent portions of the helmet mandible that form no part of the claimed design. 

CLAIM The ornamental design for a helmet mandible, as shown and described. 